"Aged" amalgam restorations were analyzed using X-ray spectrometry with the SEM and the electron microprobe. The results indicated that the corrosion process penetrates throughout the amalgam mass. The tin of the γ2 phase consistently was associated with nonmetals, particularly chlorine, in areas of high corrosion. Other nonmetals were associated with tin within the interfacial corrosion layer and, to a lesser degree, within the amalgam bulk.
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References
1.
Guthrow, C.E. ; Johnson, L.B.; and Lawless, K.R. : Corrosion of Dental Amalgam and Its Component Parts, J Dent Res46: 1372-1381,1967.
2.
Habu,HIROYOSHI : A Polarographic Study of the Corrosion Tendency of Dental Amalgam , J Nihon Univ Sch Dent6: 6-16, 1964.
3.
Nagai, Kazuo , and Ohashi, Masoyoshi: Study of the Corrosion Resistancy of Spherical Amalgam with Reference to Human Saliva, J Nihon Univ Sch Dent9: 143-163, 1967.
4.
Johnson, L.B. , and Lawless, K.R.: Corrosion Under Stress of Materials Composing Dental Amalgam, J Biomed Mater Res3: 569-576, 1969.
5.
Jorgensen, K.D. : The Mechanism of Marginal Fracture of Amalgam Fillings, Acta Odontol Scand23: 347-389, 1965.
6.
Mateer, R.S. , and Reitz, C.D.: Corrosion of Amalgam Restorations , J Dent Res49: 399-407, 1970.
7.
Wei, S.H.Y. , and Ingram, M.J.: Analyses of the Amalgam-Tooth Interface Using the Electron Microprobe, J Dent Res48: 317-320, 1969.
8.
Allan, F.C.; Asgar, Kamal; and Peyton, F.A.: Microstructure of Dental Amalgam, J Dent Res44:1002-1012, 1965.
9.
Allan, Lawrence , and Rosen, J.J.: Personal communication, June, 1972.
10.
Asgar, Kamal , and Sutfin, Lloyd: Brittle Fracture of Dental Amalgam, J Dent Res44: 977-988, 1965.
11.
Jorgensen, K.D., and Saito,TSUYOSHI: Structure and Corrosion of Dental Amalgams, Acta Odontol Scand28: 129-142, 1970.
12.
Johnson, L.N. ; Asgar, Kamal; and Peyton, F.A.: Microanalysis of Copper-Tin Phases in Dental Amalgam, J Dent Res48: 872-878, 1969.
13.
Modern X-Ray Analysis.Prairie View, III: Nuclear Diodes, Inc., 1970 .
